Multicast is the mechanism using which data traffic is reduced thoughout the network if a certain number of receivers are interested in the same data from the same source. This increases the efficiency of the network as less packets needs to be processed by the intermediate routers in the network. ...

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DD-WRT and Chromecast: default WLAN to LAN bridge blocks UDP?

I have DD-WRT running in gateway mode on a DIR-615 I1. I've updated to the newest available build. Chromecast is a wireless-only device, for those unfamiliar. The device has been set up and ...
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456 views

Windows XP multicast route unable to be set on Windows 7

I have to set a route that I am setting in windows xp by using this command : route -p add 224.224.224.0 mask 240.240.240.0 150.1.2.194 metric 30 Under windows 7, this command doesn't work anymore ...
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What will a router do receiving a multicast IP packet with no multicast routing protocols enabled in it?

Have anybody seen what a router having no multicast routing protocols enabled will do when it receives multicast data ? will it ignore ? Will it consider it as like any other unicast data ?
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IGMP v3 multicasted television through router with IGMP v2

we can connect to internet using LAN cable at out student's dormatory. We can watch multicasted television on our computers using VLC media player. Everything works fine this way. I decided to buy ...
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70 views

can Multicast receivers also act as multicast data generators?

suppose I have 4 computers A B C and D. If B C and D are receiving multicast data from A, can one of them ...say B... can also send multicast data to others say A C and D?
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Problem in listening to multicast in multihomed Linux server

I am trying to write a multicast client on a machine with two NICs, and I can't make it work. I can see with a sniffer that once I start the program the NIC (eth4) start receiving the multicast ...
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168 views

NTP Multicast configuration

I'm trying to get NTP multicast set up between a few computers. Right now I'm getting NTP multicast packets from a computer that I have neither access to nor information on (let's call that A) that is ...
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712 views

Why does multicast streaming only work with 224.0.0.0/4 routed to network card/NIC in Linux?

a project of mine involves multicast streaming of DBV-S2 TV channels by using a networked SAT tuner. As there are no IGMP-capable network switches, the network is quite stressed and so I set up a ...
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99 views

How does UPnP know which IGD to port forward on if there is more than one IGD?

Say I have two IGDs on the same subnet with UPnP enabled. The host is configured to use one as its default gateway. How do UPnP applications know which IGD to port forward on. I don't think they use ...
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194 views

Swapping the ISP supplied router on DSL connections that also supply TV

My ISP is TalkTalk and I have one of their FTTC packages. With that I also have their YouView TV service. Before getting this service I used my own routers, as ISP supplied ones didn't have the ...
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19 views

Stream Multicast channel on a website

I have a simple website with JWPlayer. Right now it is receiving a stream from my camera (rtmp protocol). I'm looking for a simple way to do the same thing with a multicast channel. I guess that I'm ...
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51 views

How do I enable/set multicast rules using firewalld in RHEL7 / CentOS 7

I cannot find docs on how to enable multicast for firewalld which is the default firewall in RHEL / CentOS 7. Can some enlighten me? FYI: I know how to do it using iptables.
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iperf returning “bind failed: cannot assign requested address” in Windows XP and 7

I am trying to set up iperf on an old HP server running Windows XP Professional to test multicast, but whenever I issue the command iperf -s -u -B <ip address>, it returns: bind failed: ...
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72 views

How to multicast live H264 without transcoding?

I have a live H264 stream (hardware encoded from the webcam) and I'd like to stream it over the network using multicast on a Linux platform. Because the platform has limited CPU power, and the data ...
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291 views

Command to add multicast address to routing table

I am trying to add a multicast route. If I do a netstat -g I get: idf@idf-ZBOX-ID42-BE ~ $ netstat -g IPv6/IPv4 Group Memberships Interface RefCnt Group --------------- ------ ...